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AWS BVAg-8b vs. R30006 Cobalt

AWS BVAg-8b belongs to the otherwise unclassified metals classification, while R30006 cobalt belongs to the cobalt alloys. There are 15 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown.

For each property being compared, the top bar is AWS BVAg-8b and the bottom bar is R30006 cobalt.

Metric UnitsUS Customary Units

Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa 84
220
Poisson's Ratio 0.36
0.28
Shear Modulus, GPa 31
85
Tensile Strength: Ultimate (UTS), MPa 170
900

Thermal Properties

Latent Heat of Fusion, J/g 140
320
Melting Completion (Liquidus), °C 800
1400
Melting Onset (Solidus), °C 780
1290
Specific Heat Capacity, J/kg-K 280
450
Thermal Expansion, µm/m-K 19
11

Otherwise Unclassified Properties

Density, g/cm3 10
8.6

Common Calculations

Stiffness to Weight: Axial, points 4.7
14
Stiffness to Weight: Bending, points 15
23
Strength to Weight: Axial, points 4.7
29
Strength to Weight: Bending, points 6.8
24
Thermal Shock Resistance, points 7.6
26

Alloy Composition

Cadmium (Cd), % 0 to 0.0010
0
Carbon (C), % 0 to 0.0050
0.9 to 1.4
Chromium (Cr), % 0
27 to 32
Cobalt (Co), % 0
48.6 to 68.1
Copper (Cu), % 26.8 to 29.2
0
Iron (Fe), % 0
0 to 3.0
Lead (Pb), % 0 to 0.0020
0
Molybdenum (Mo), % 0
0 to 1.0
Nickel (Ni), % 0.3 to 0.7
0 to 3.0
Phosphorus (P), % 0 to 0.0020
0
Silicon (Si), % 0
0 to 2.0
Silver (Ag), % 70.5 to 72.5
0
Tungsten (W), % 0
4.0 to 6.0
Zinc (Zn), % 0 to 0.0010
0